Python logging time since start of program

Question

I'm using the logging module to create loggers and output data. Instead of using $(asctime)s in logging.Formatter, is there a good way to log the timestamp relative to the creation of the logger?

Answer 1

Using %(relativeCreated)d field in a conventional Formatter format string will display the milliseconds elapsed since the logging module was loaded. While milliseconds might not be what you want, there's no additional coding required.